The United States of America was originally built on two important documents. The first, the Declaration of Independence, was signed by 56 men in the middle of 1776. The second, the Constitution, was signed by 39 men in September 1787. Six of those men put their John Hancock on both documents. To find out more, we talked with authors Denise Kiernan and Joseph D'Agnese who have written short background stories about the signers in two books: "Signing Their Lives Away," for the Declaration of Independence, and "Signing Their Rights Away," for the Constitution.     
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